Door opening and closing device.



PATBNTED MAY '7, 1907 H. WITTE. DOOR OPENING AND CLOSING DEVICE.

APPLICATION FILED 00T.11, 1906.

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PATENTED MAY 7, 1907.

APPLICATION FILED OOT.11, 1906.

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No. 852,814. Y 'PATENTBD MAY 7, 1907;

WITTE. noon OPENING AND CLOSING DEVICE.

APPLICATION FILED 0'0T.11,1906.

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UNITE-D- s'rA'r s PATENT OFFICE.-

HUBERT WITTE, OFSTQ OUIS, MISSOURI, ASSIGNOR To ST. LOUIS CAR QOMPANY,OF ST. LOUIS, MISSOURI, A CORPORATION.

' DOOR OPENING. AND CLOSING DEVICE.

Specification of Letters Patent.

Patented May 7, 1907.

I Application filed October 11, 1906. Serial No. 338391.

To an whom it may concern:

Be it known. that I, HUBERT Wrr'ria, a citizen of the United States ofAmerica, residing int'he cityof St. Louis, inthe State of'Missouri, haveinvented certain new and useful Improvements in Door Openin and ClosingDevices, of which the following is a full, clear,

' and exact description, reference being had to this speci cation.

My inventionrelates to a device .for o ing and closing doors and moreparticu arly doors used u'pon the platforms of railway cars, the objectof the invention beingto provide a door opening and closingmechanismthat may be operated by one of the crew of a the accom anying drawings,forming part of car, for-instancethe conductor or motorman anism in theposition assume 7 is in opened position. Fig. III is in part, a

to permit the entrance or exit of passengers vertical section takenthrough the end of the by a partition Bend the 4 ing provided for thepurpose of furnishing a ing car and in plart an elevation of the dooroperating meo anism and .the door in closed pdsition. Fig. IV is anenl'ar ed vertical section taken on line I-V'IV, i III.

A designates the platform a railway'cai' which is surmounted by a frontwall containplat orm A is subdivided tocprovide a passagewayleading tothe interior of the. car:

from thesteps of theplatfo'rm, as-indicated at D, this division beingdpreferably efiected" .01 F, the doorbewall for said passageway and alsofor the purpose of permitting the person who is to 0perate, the doormechanism to pass from t e passageway D of the platform to the otherportion of the platform which he occupies, during the operation'of thedoor.

1 design at 2 to the platform'post C and is adapte to tr'on- ;toward thepartition E;

3 -isfiasecond doorsection that is connected by hinges-f4- to the 'firstnamed section, the.

(i'perated thereby is osts B and C. The space above the- ,zontal slot Ebein provide ates a door section that ishin ed.

hinges being located at the outer sides of the door sections, in orderthat when the two door sections are moved inwardly the second doorsection 3 may become'folded' against the outer side'of the firstdoorsection 1. Above the door consisting of the sections 1 and 3 is achannel shaped track rail 5.

6 is a guide arm secured to the door section 3 and to which is journaledan. anti-friction roller 7 that is adapted to travel in the track railfor the purpose of guiding and steadying the? door section 3 during theperiod of moving the sectional door from its closed to its 0 en andfolded position and vice versa. v8 esignates a rock shaft that isvertically positioned in the space above the platform A occupied by theperson who is to operate the door 0 crating means, this rock shaft beingprefera ly journaled in boxes, one. of which,

as indicated at 9, may be attached to the platform wall post B and theother of which may be mounted upon the platform as seen at 10.

11 is ano crating handle fixed to the rock shaft 8. T e rock shaftpreferably extends beneath the platform and it has fixed to it acrankarm 12 v 13 is a link pivoted at one end to thecrank arm 12.

- 14,is a vertical rock shaft located adjacent to the partition E andpreferably mounted in a box 15 secured to sald artition and a box 16mounted u on the atform. The rock shaft 14, like t e rock s aft 8,preferably extends beneath the platform and has fixed to it a crank arm17 that receives the connection of the connecting link 1'3 (see fulllines Fig. III and dotted lines Figs. I and II.) 18 designates'a leverarm fixed to the rock shaft 14 and. extending therefrom through thepartition E to the passageway D, a horiin-said partition for this.purpose see Fig. III.) The lever arm 18 is connected by a rule-joint at19v to a link 20 that is in turn pivotedat 21. to aswmg arm '22 looselyconnected to the connecti door section 3 b l attachment at 23 to abracket 24 which is permanently fastened to said door section.

25is a guide bracket mounted in a horizontal position upon the partitionE at the side thereof facing jthe passageway D and which I contains achannel shaped uideway-26.

2'7'is a guide armp vota 1y connected to the connecting link and theswing arm 22 at the point 21' and provided at its other end with anantifriction roller 28 (see dotted linesFigs. I to III inclusive) thatis adapted quence'of this movement of the lever arm a 1 pull is effectedupon theconnecting link 20 and the swing arm 22, the rule-joint betweenthe lever arm and connecting link being broken during this action. As aconsequence the swinging arm 22 is caused to exert a pull uponthe doorsections 3 and 1, so that the former is folded against the latter andthe two sections are moved into the folded and 0 en position illustratedin Fig. II. During 1 -t is folding and opening of the door sections thesection 3 is properly guided relative to the section 1 through themedium of the guide arm 6 and its anti frietion roller 7 operating inconjunction with'the'guide rail 5. Also during the movement of theleverarm,

connecting link and swing arm the move'-. ment of the connectin link andswing arm v is directed by the gui earm 27 having thev anti-frictionroller 28. that travels in the guideway 26 of the bracket 25. In closinthe door the movement of the parts is in al essentials the reverse ofthat described in connection with the opening of the door and thereforemore detailed description on this point is deemednnnecessary.

I claim:. 1. In a door opening and closing device,

the combination with a door, of a swing-arm As a conseconnected to saiddoor, a rock-shaft, lever connection between said 'rockshaft and swin-arm a, uide bracket 'a uide 'arm' pivoted to said lever connection andslidably fitted to said bracket, and means for operating saidrock-shaft, substantially as set forth.

2. In a door opening and closing device, the combination with a door,ofa swing-arm connected to said door, a rock shaft, a lever fixed tosaidrock shaft, a connecting link pivotally connecting said lever andswingarm, a uide arm pivoted link and swing-arm at a point of theirconnection, a guide in which said guide arm operates, and means foroperating said rock-shaft, substantially as set forth.

3. In a door opening and the combination'with a sectional door, of aswing-arm-connected to one of the sections of said door, a rock shaft,means for"operat ing said rock shaft, a lever fixed tosaid rock to saidconnecting it 60 closing devlce,

shaft, a connecting link pivoted to said swing arm and havln rule-101mOOIIIIGOtlOIl with said ever, a guide bracket, and a guide arm havingpivotal connection with said swing-arm and link and slidably fitted tosaid guide bracket substantially as set forth. 4.. In a door opening andclosing device,

the combination with a sectional door, of .a-

swing-arm connected to one of the sections of said door, a rock shaft,means for oper-' ating said rock shaft, a lever fixed to said rockshaft, a connecting-link pivoted to said swing-arm, a guide brackethaving a guideway therein, and a guide arm pivoted to saidswing-armconnecting link at the point of connection thereof and arranged tooperate .in the guideway of said guidebracket, substantially as setforth. 7

' I HUBERT WITTE.

In presence of GEO. W. FULLER, Louis, NIEHAUS.

